Well folks, back with more bad news. I've been trying to get my 951 rebuild off (after breaking a rod and trashing the motor a year ago) the ground for about 6 months now, but I'm hitting a wall at every turn. The first block I obtained turned out to have badly tapered cylinder walls requiring a .040 overbore to clean up.

The engine in my NA also has a cracked block...

I picked up another used engine for the grand cost of $0 a few weeks ago and finally got to tearing it down this week. Turns out it has massive gouges and rust rings in the bore, so it too is trash.

Steel sleeving is still a valid candidate for either of the two noncracked blocks I currently have, but the cost is still prohibitive and I'd hate to not be able to use my shiny mint set of 951 pistons and rods I bought 3 months ago.

Its becoming a huge bummer though that I can't seem to locate a block that is in rebuildable condition.

I'm half venting my frustration and half asking if somebody could help me. My buddy lucked into an absolutely minty engine block on his first try, and is already making great progress on the build. I'd like to be where he is at.

I need a clean tolerance group 1 block with the matching balance shafts, covers, and crank girdle. preferably an 85.5 or 86 as I'm not fond of the spring tensioner setup and I already have a lot of the rebuild seals and gaskets and such for an 85.5-86 block. I'm located near Austin texas but at this point I'm willing to drive many hours out of my way to go pick up a block, so long as the bores are clean and straight and the price is right.

4 bad motors in a years time...it's been a rough time lately for me in Porsche world. 1 step forward, then 2 steps back.

Doug

 

I'm also interested in finding an 85.5+ running NA motor locally in texas to drop into my 86 NA.

 

I got an excellent 951 block from Lart. Fast reasonably priced and well packaged. I can certainly recommend that route.

 

buddy chiming in Doug, really, you're set up for a way smoother build once you get a block. I'm still thinking about basic stuff like how to get oil to the turbo, '82 blocks didn't have those provisions in place as you know...


Paging lart, still waiting on a reply about those 951 pistons... messaged you on here and on facebook a few weeks ago.

 

Michael, the answer is an 11/32" drill bit and a 1/4 NPT tap. Done and Done.

 

Doug, JoshB had a low miles 951 short block for like $450 recently.

 

I've probably missed lots of good deals. I havn't even checked on here in months, just sort of forgot about the cars for a bit and got really absorbed with school and work.

Problem is I need local items, a 450 dollar block becomes a 750 dollar block real fast when it needs to be shipped across the country.

 

I wish. the early balance shaft bearing "retainers" are the covers themselves, versus the clips that sit below the covers in a late car. No-go on that I think.

 

You just drill the little boss, the same location where the 86+ NA and 951 housings are factory drilled tapped and; in the case of the NA cars; plugged.

 

The early turbo blocks had seperate covers, with a seal placed between the bearing cap and the cover.

 

Not to mention, the 82-83 balance shaft covers themselves look TOTALLY different to the 84+ ones.

84+ are "boxy" and the 82-83 are round, like a closer fit around the B-shaft...



see:

 

(sorry for dragging this off topic... Doug really does need a block, if you're near houston or even close, drop me a line and I can grab it)

That boss wasn't there until 85... it's simply not designed to be a pickoff point for oil, at this production stage.

Wish I had started with a late motor, or a turbo motor, but not an impossible obstacle. The early NA blocks didn't even have those caps...

 

Not sure what you are talking about? I've taken apart a bunch of 944 motors, including an 86 951 motor and there is definitely not a seal between the bearing cap and the shaft cover. The cover is sealed to the block with anaerobic sealant, and has a rubber O ring seal on both ends. Same thing on the 85.5 and 86 NA motors I've torn down, and the 86 turbo engine was essentially identical to an 86 NA motor except for a few small differences. The balance shaft setup is identical.

Michael, get a sandwhich plate and never look back.

As an aside, isnt the oil filter how Callaway did it on their cars?

 

I have this block that is returning to me, I sold it to a guy totally inexperienced with 944's one tiny scratch and the guy is retarded.

https://rennlist.com/forums/924-931-...his-block.html

http://www.ebay.com/itm/Porsche-951-...215404455?rd=1


I can have it shipped to you, if you only need the bare block I can do it for $ 450.00 shipped, I also have a 86 na engine but I need to open it it hasn't run in a couple of years, that engine i can let you have for $ 450.00 but shipping will be freight at least $ 350.00 on a pallet

 

Doug,
Why don't you buy Michael's spare NA engine off him, for your NA car.

Michael gets $$ to buy a 951 block for his project. But, Michael needs time to get his SC kit figured out.

Michael's 951 block gets run in Doug's 951 car, while Doug saves up to buy a 951 block of his own...then you guys can swap ownership of blocks later.